This is in preparation to help bring the missing device back to the alloc list dynamically. As of now if we run 'btrfs dev scan </dev/missing>' on a mounted FS, nothing happens, there is no code which handles this condition. So the idea is to fix it by running through the device open process for the reappeared missing device.
So this patch separates device open steps into a separate function so that it can be called for a device, instead of for all the devices in the dev_list. As this function is in the critical mount section, and to show the src code changes as clearly as possible, I have created 4 no-functional changes patches, which can be merged together if needed. Anand Jain (4): btrfs: set fs_devices->seed directly btrfs: let variable required be declared inside the loop btrfs: move check for device generation to the last btrfs: factor __btrfs_open_devices() to create btrfs_open_one_device() fs/btrfs/volumes.c | 125 +++++++++++++++++++++++++++++------------------------ 1 file changed, 69 insertions(+), 56 deletions(-) -- 2.13.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
